I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
sere ser sure sear cere sore sera sire seer suer serai serow serry saree siree sieur soiree sierra sirree surrey sri sir sari soar cire cero sour sura sori sora zero ceria saury sirra sorry surah surra zaire
ere fere here quaere mere pere cere sere dere were where re er